Powertrain
Definition only
Lights the check engine lamp
P2856: Clutch B Pressure Charge Performance
Standardized SAE J2012 code · P28xx codes
What does P2856 mean?
Clutch B hydraulic pressure does not build up as expected when commanded to engage. Engagement is delayed or weakened.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Common causes
- High Clutch actuator seal leaks
- Medium Aerated transmission fluid
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2856 on the same make and model first.
P2856 in the community
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